| /* SPDX-License-Identifier: GPL-2.0 */ |
| |
| #ifndef _ASM_RISCV_IRQ_STACK_H |
| #define _ASM_RISCV_IRQ_STACK_H |
| |
| #include <linux/bug.h> |
| #include <linux/gfp.h> |
| #include <linux/kconfig.h> |
| #include <linux/vmalloc.h> |
| #include <linux/pgtable.h> |
| #include <asm/thread_info.h> |
| |
| DECLARE_PER_CPU(ulong *, irq_stack_ptr); |
| |
| #ifdef CONFIG_VMAP_STACK |
| /* |
| * To ensure that VMAP'd stack overflow detection works correctly, all VMAP'd |
| * stacks need to have the same alignment. |
| */ |
| static inline unsigned long *arch_alloc_vmap_stack(size_t stack_size, int node) |
| { |
| void *p; |
| |
| p = __vmalloc_node(stack_size, THREAD_ALIGN, THREADINFO_GFP, node, |
| __builtin_return_address(0)); |
| return kasan_reset_tag(p); |
| } |
| #endif /* CONFIG_VMAP_STACK */ |
| |
| #endif /* _ASM_RISCV_IRQ_STACK_H */ |